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Adapter Tau/E1

Discontinued, recommended replacement is: TAU-PCI/2E1

Specifications
Documentation

Dual internal short range modem Tau/E1 Features:
  • ITU G.703, G.704, G.706 and G.823 compliant
  • Up to 1.5 km
  • CAS and CRC4 framing
  • Full duplex synchronous mode
  • Selectable data rates
  • Digital, remote and line loopbacks
  • Internal modem for IBM PC, ISA bus

The Tau/E1 is an adapter board for IBM PC and compatible computers with ISA bus. It includes two E1 interfaces operating at distances up to 1.5 km and one digital interface for a standby link. The adapter architecture is similar to the E1-XL dual modem.

Tau/E1 can be configured by software for three modes of operation: (see Block Diagram below).

The Cronyx-Tau software allows to join several physical synchronous communication channels into one logical channel. For example, two channels with data rate 1984 kbps, joined together, will create the logical channel with the overall throughput of 3968 kbps.

Configuration A: Dual E1 accsess unit. E1 Link 0 and E1 Link 1 operate independently and have identical data pathes to the PC memory. Data transfer rate is determined by the number of timeslots used.

Configuration B: Integrating multiplexer with one data channel and E1 sub-link. The timeslots of main link (E1 Link 0) are assigned to data channel and E1 sub-link. The data channel to/from PC memory is supported by HDLC Controller 0. E1 sub-link (E1 Link 1) translates user-defined timeslots to the remote node. This configuration allows to split the main link data between several chained Tau/E1 nodes (up to 30) with the distance between nodes of up to 1.5 km. The Digital Interface and HDLC-Controller 1 create independent sync/async channel operating at data rates up to 4 Mbps.

Configuration C: Integrating multiplexer with two data channels and E1 sub-link. The timeslots of main link (E1 Link 0) are assigned to two data channels and E1 sub-link. Two data channels to/from PC memory are supported by HDLC Controllers 0 and 1. E1 sub-link (E1 Link 1) translates remaining timeslots to the remote node. This configuration allows to split the main link data between several chained Tau/E1 nodes (up to 15) with the distance between nodes of up to 1.5 km. For this configuration the Digital Interface is disconnected.

Specifications

PC Bus Interface
Bus Type ISA, 16 bit
I/O Base Address 200h - 3e0h, Jumper Selectable
I/O Address Space 32 Bytes
Interrupts IRQ 3, 5, 7, 10, 11, 12, 15, Software Selectable
DMA Channels DMA 5, 6, 7, Software Selectable
DMA Transfers Master Mode, Word Bursts
Addressable Memory 16 Mbytes
Serial Interface
Data Transfer Rate per direction for each channel simultaneous operation 4 Mbps
Bit Rate Generator Independent per channel
Synchronous Protocol HDLC
Asynchronous Transfer 5-8 Bits/Character, 1/1.5/2 Stop Bits
Sync Mode Error Detection Cyclic Redundancy Check CRC-16, CRC-CCITT
Async Mode Error Detection Parity bit
Clock Options TXCIN, RXCIN, TXCOUT or DPLL, Software selectable per channel
Modem Control Signals DTR, DSR, CTS, RTS, CD
E1 Interfaces
Data Transfer Rate up to 1984 kbps (Nx64 kbps), Software selectable per channel
Line Code AMI or HDB3, Software selectable per channel
Line Impedance 120 Ohm (Twisted Pair) or 75 Ohm (Coax Cable), Jumpers selectable per channel
Receive Signal Attenuation Range from 0 to 12 dB or to 30 dB, software selectable (up to 1.5 km of 22 AWG twisted-pair cable)
Jitter Attenuator 128 bits depth, in the receive path
Frame Structure per G.704
Multiframes CRC4, CAS
Frequency Offsets Adjustment Controlled Frame Slip
Board Size Height: 100 mm, Width: 167 mm
Operating Systems Supported FreeBSD 4.x, 5.x, 6.x, Linux (FreeBSD 7.x is not supported)
Protocols Supported PPP, Cisco/HDLC, Frame Relay

Документация

Некоторые документы хранятся в формате Adobe® Acrobat® Reader®

PDF  User's Manual in Russian
PDF  Driver Development Kit Manual in Russian
TXT  V.35 cable scheme
TXT  RS-232 cable scheme
PDF Справочник по интерфейсным кабелям Cronyx.

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